[dpdk-dev] [PATCH v2] doc: fix update release notes for Mellanox drivers

Ori Kam orika at mellanox.com
Mon May 13 08:43:22 CEST 2019


Hi,

PSB

> -----Original Message-----
> From: Shahaf Shuler
> Sent: Monday, May 13, 2019 8:26 AM
> To: Ori Kam <orika at mellanox.com>; Yongseok Koh <yskoh at mellanox.com>;
> Matan Azrad <matan at mellanox.com>; Thomas Monjalon
> <thomas at monjalon.net>
> Cc: dev at dpdk.org; Ori Kam <orika at mellanox.com>
> Subject: RE: [dpdk-dev] [PATCH v2] doc: fix update release notes for Mellanox
> drivers
> 
> Hi Ori,
> 
> See some comments below.
> 
> Sunday, May 12, 2019 11:33 PM, Ori Kam:
> > Subject: [dpdk-dev] [PATCH v2] doc: fix update release notes for Mellanox
> > drivers
> >
> > This patch adds some missing features to Mellanox drivers release notes.
> > It also updates the mlx5/mlx4 documentations.
> >
> > Fixes: d85b204b5dba ("doc: update release notes for Mellanox drivers")
> > Cc: yskoh at mellanox.com
> >
> > Signed-off-by: Ori Kam <orika at mellanox.com>
> >
> > ---
> >
> > v2:
> >  * fix checkpatch warning.
> >
> > ---
> >  doc/guides/nics/mlx4.rst               |   2 +-
> >  doc/guides/nics/mlx5.rst               | 150 ++++++++++++++++++++++-----------
> >  doc/guides/rel_notes/release_19_05.rst |  10 ++-
> >  3 files changed, 109 insertions(+), 53 deletions(-)
> >
> > diff --git a/doc/guides/nics/mlx4.rst b/doc/guides/nics/mlx4.rst index
> > f6d7a16..5c6bbde 100644
> > --- a/doc/guides/nics/mlx4.rst
> > +++ b/doc/guides/nics/mlx4.rst
> > @@ -253,7 +253,7 @@ thanks to these environment variables:
> >  Mellanox OFED as a fallback
> >  ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > -- `Mellanox OFED`_ version: **4.4, 4.5**.
> > +- `Mellanox OFED`_ version: **4.4, 4.5, 4.6**.
> >  - firmware version: **2.42.5000** and above.
> >
> >  .. _`Mellanox OFED`:
> > http://www.mellanox.com/page/products_dyn?product_family=26&mtag=li
> > nux_sw_drivers
> > diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst index
> > 325e9f6..5cf7744 100644
> > --- a/doc/guides/nics/mlx5.rst
> > +++ b/doc/guides/nics/mlx5.rst
> > @@ -7,7 +7,7 @@ MLX5 poll mode driver
> >
> >  The MLX5 poll mode driver library (**librte_pmd_mlx5**) provides support
> > for **Mellanox ConnectX-4**, **Mellanox ConnectX-4 Lx** , **Mellanox -
> > ConnectX-5**, **Mellanox ConnectX-6** and **Mellanox Bluefield**
> > families
> > +ConnectX-5**, **Mellanox ConnectX-6** and **Mellanox BlueField**
> > +families
> >  of 10/25/40/50/100/200 Gb/s adapters as well as their virtual functions (VF)
> > in SR-IOV context.
> >
> > @@ -62,8 +62,8 @@ Features
> >  - RX VLAN stripping.
> >  - TX VLAN insertion.
> >  - RX CRC stripping configuration.
> > -- Promiscuous mode.
> > -- Multicast promiscuous mode.
> > +- Promiscuous mode on PF and VF.
> > +- Multicast promiscuous mode on PF and VF.
> >  - Hardware checksum offloads.
> >  - Flow director (RTE_FDIR_MODE_PERFECT,
> > RTE_FDIR_MODE_PERFECT_MAC_VLAN and
> >    RTE_ETH_FDIR_REJECT).
> > @@ -78,6 +78,11 @@ Features
> >  - Rx HW timestamp.
> >  - Tunnel types: VXLAN, L3 VXLAN, VXLAN-GPE, GRE, MPLSoGRE, MPLSoUDP.
> >  - Tunnel HW offloads: packet type, inner/outer RSS, IP and UDP checksum
> > verification.
> > +- Nic HW offloads: encapsulation (vxlan, gre, mplsoudp, mplsogre), NAT,
> > +routing, TTL
> > +  increment/decrement, count, drop, mark. For details please see
> > :ref:`Supported hardware offloads using rte_flow API`.
> > +- Flow insertion rate of more then million flows per second. When using
> > Direct Rules.
> 
> Replace '.' with ',' .
> 

O.K

> > +- Support groups.
> 
> Support for multiple rte_flow groups.
> 

O.K

> > +- Support raw encapsulation offload.
> 
> Can't it be part of the encapsulation part above?
> 

Do you mean the tunnel HW offloads?
If yes I guess it can be there.

> >
> >  Limitations
> >  -----------
> > @@ -112,8 +117,6 @@ Limitations
> >    is set to multi-packet send or Enhanced multi-packet send. Otherwise it
> > must have
> >    less than 50 segments.
> >
> > -- Count action for RTE flow is **only supported in Mellanox OFED**.
> > -
> >  - Flows with a VXLAN Network Identifier equal (or ends to be equal)
> >    to 0 are not supported.
> >
> > @@ -124,13 +127,6 @@ Limitations
> >  - VF: flow rules created on VF devices can only match traffic targeted at the
> >    configured MAC addresses (see ``rte_eth_dev_mac_addr_add()``).
> >
> > -.. note::
> > -
> > -   MAC addresses not already present in the bridge table of the associated
> > -   kernel network device will be added and cleaned up by the PMD when
> > closing
> > -   the device. In case of ungraceful program termination, some entries may
> > -   remain present and should be removed manually by other means.
> > -
> 
> This is still correct, why removed?
> 

Will return the code.

> >  - When Multi-Packet Rx queue is configured (``mprq_en``), a Rx packet can
> > be
> >    externally attached to a user-provided mbuf with having
> > EXT_ATTACHED_MBUF in
> >    ol_flags. As the mempool for the external buffer is managed by PMD, all
> > the @@ -147,30 +143,18 @@ Limitations
> >    To receive IPv6 Multicast messages on VM, explicitly set the relevant
> >    MAC address using rte_eth_dev_mac_addr_add() API.
> >
> > -- E-Switch VXLAN tunnel is not supported together with outer VLAN.
> > -
> > -- E-Switch Flows with VNI pattern must include the VXLAN decapsulation
> > action.
> > -
> > -- E-Switch VXLAN decapsulation Flow:
> > +- E-Switch decapsulation Flow:
> >
> >    - can be applied to PF port only.
> >    - must specify VF port action (packet redirection from PF to VF).
> > -  - must specify tunnel outer UDP local (destination) port, wildcards not
> > allowed.
> > -  - must specify tunnel outer VNI, wildcards not allowed.
> > -  - must specify tunnel outer local (destination)  IPv4 or IPv6 address,
> > wildcards not allowed.
> > -  - optionally may specify tunnel outer remote (source) IPv4 or IPv6,
> > wildcards or group IPs allowed.
> >    - optionally may specify tunnel inner source and destination MAC
> > addresses.
> >
> > -- E-Switch VXLAN encapsulation Flow:
> > +- E-Switch  encapsulation Flow:
> >
> >    - can be applied to VF ports only.
> >    - must specify PF port action (packet redirection from VF to PF).
> > -  - must specify the VXLAN item with tunnel outer parameters.
> > -  - must specify the tunnel outer VNI in the VXLAN item.
> > -  - must specify the tunnel outer remote (destination) UDP port in the
> > VXLAN item.
> > -  - must specify the tunnel outer local (source) IPv4 or IPv6 in the , this
> > address will locally (with scope link) assigned to the outer network interface,
> > wildcards not allowed.
> > -  - must specify the tunnel outer remote (destination) IPv4 or IPv6 in the
> > VXLAN item, group IPs allowed.
> > -  - must specify the tunnel outer destination MAC address in the VXLAN
> > item, this address will be used to create neigh rule.
> > +
> > +- Groups, E-Switch steering, fast inseration rate are supported only with
> > Mellanox OFED 4.6.2 and above.
> 
> I think the right place for such limitations is the table below (Supported
> hardware offloads using rte_flow API).
> 

O.K will update to something like this:
Action | Nic                                             | E-Switch
Count  | DPDK > 19.02                          | DPDK > 19.05
             | OFED > 4.6.2 / RDMA > xxx  | OFED > 4.6.2 / RDMA > xxx

Is that O.K?
               
> >
> >  Statistics
> >  ----------
> > @@ -227,7 +211,7 @@ These options can be modified in the ``.config`` file.
> >
> >  .. note::
> >
> > -   For Bluefield, target should be set to ``arm64-bluefield-linux-gcc``. This
> > +   For BlueField, target should be set to
> > + ``arm64-bluefield-linux-gcc``. This
> >     will enable ``CONFIG_RTE_LIBRTE_MLX5_PMD`` and set
> > ``RTE_CACHE_LINE_SIZE`` to
> >     64. Default armv8a configuration of make build and meson build set it to
> > 128
> >     then brings performance degradation.
> > @@ -277,8 +261,8 @@ Run-time configuration
> >
> >    Supported on:
> >
> > -  - x86_64 with ConnectX-4, ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > Bluefield.
> > -  - POWER8 and ARMv8 with ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > Bluefield.
> > +  - x86_64 with ConnectX-4, ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > BlueField.
> > +  - POWER9 and ARMv8 with ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > BlueField.
> >
> >  - ``rxq_cqe_pad_en`` parameter [int]
> >
> > @@ -296,7 +280,7 @@ Run-time configuration
> >
> >    Supported on:
> >
> > -  - CPU having 128B cacheline with ConnectX-5 and Bluefield.
> > +  - CPU having 128B cacheline with ConnectX-5 and BlueField.
> >
> >  - ``rxq_pkt_pad_en`` parameter [int]
> >
> > @@ -308,8 +292,8 @@ Run-time configuration
> >
> >    Supported on:
> >
> > -  - x86_64 with ConnectX-4, ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > Bluefield.
> > -  - POWER8 and ARMv8 with ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > Bluefield.
> > +  - x86_64 with ConnectX-4, ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > BlueField.
> > +  - POWER8 and ARMv8 with ConnectX-4 LX, ConnectX-5, ConnectX-6 and
> > BlueField.
> >
> >  - ``mprq_en`` parameter [int]
> >
> > @@ -375,13 +359,13 @@ Run-time configuration
> >
> >    This option should be used in combination with ``txq_inline`` above.
> >
> > -  On ConnectX-4, ConnectX-4 LX, ConnectX-5, ConnectX-6 and Bluefield
> > without
> > +  On ConnectX-4, ConnectX-4 LX, ConnectX-5, ConnectX-6 and BlueField
> > + without
> >    Enhanced MPW:
> >
> >          - Disabled by default.
> >          - In case ``txq_inline`` is set recommendation is 4.
> >
> > -  On ConnectX-5, ConnectX-6 and Bluefield with Enhanced MPW:
> > +  On ConnectX-5, ConnectX-6 and BlueField with Enhanced MPW:
> >
> >          - Set to 8 by default.
> >
> > @@ -395,14 +379,14 @@ Run-time configuration
> >          - Set to 8 by default on ARMv8.
> >          - Set to 4 by default otherwise.
> >
> > -  On Bluefield
> > +  On BlueField
> >
> >          - Set to 16 by default.
> >
> >  - ``txq_mpw_en`` parameter [int]
> >
> >    A nonzero value enables multi-packet send (MPS) for ConnectX-4 Lx and
> > -  enhanced multi-packet send (Enhanced MPS) for ConnectX-5, ConnectX-6
> > and Bluefield.
> > +  enhanced multi-packet send (Enhanced MPS) for ConnectX-5, ConnectX-6
> > and BlueField.
> >    MPS allows the TX burst function to pack up multiple packets in a
> >    single descriptor session in order to save PCI bandwidth and improve
> >    performance at the cost of a slightly higher CPU usage. When @@ -417,13
> > +401,13 @@ Run-time configuration
> >    DEV_TX_OFFLOAD_VXLAN_TNL_TSO, DEV_TX_OFFLOAD_GRE_TNL_TSO,
> > DEV_TX_OFFLOAD_VLAN_INSERT``.
> >    When those offloads are requested the MPS send function will not be
> > used.
> >
> > -  It is currently only supported on the ConnectX-4 Lx, ConnectX-5, ConnectX-
> > 6 and Bluefield
> > +  It is currently only supported on the ConnectX-4 Lx, ConnectX-5,
> > + ConnectX-6 and BlueField
> >    families of adapters.
> >    On ConnectX-4 Lx the MPW is considered un-secure hence disabled by
> > default.
> >    Users which enable the MPW should be aware that application which
> > provides incorrect
> >    mbuf descriptors in the Tx burst can lead to serious errors in the host
> > including, on some cases,
> >    NIC to get stuck.
> > -  On ConnectX-5, ConnectX-6 and Bluefield the MPW is secure and enabled
> > by default.
> > +  On ConnectX-5, ConnectX-6 and BlueField the MPW is secure and enabled
> > by default.
> >
> >  - ``txq_mpw_hdr_dseg_en`` parameter [int]
> >
> > @@ -443,14 +427,14 @@ Run-time configuration
> >
> >  - ``tx_vec_en`` parameter [int]
> >
> > -  A nonzero value enables Tx vector on ConnectX-5, ConnectX-6 and
> > Bluefield NICs if the number of
> > +  A nonzero value enables Tx vector on ConnectX-5, ConnectX-6 and
> > + BlueField NICs if the number of
> >    global Tx queues on the port is less than ``txqs_max_vec``.
> >
> >    This option cannot be used with certain offloads such as
> > ``DEV_TX_OFFLOAD_TCP_TSO,
> >    DEV_TX_OFFLOAD_VXLAN_TNL_TSO, DEV_TX_OFFLOAD_GRE_TNL_TSO,
> > DEV_TX_OFFLOAD_VLAN_INSERT``.
> >    When those offloads are requested the MPS send function will not be
> > used.
> >
> > -  Enabled by default on ConnectX-5, ConnectX-6 and Bluefield.
> > +  Enabled by default on ConnectX-5, ConnectX-6 and BlueField.
> >
> >  - ``rx_vec_en`` parameter [int]
> >
> > @@ -480,10 +464,15 @@ Run-time configuration
> >
> >    A nonzero value enables the DV flow steering assuming it is supported
> >    by the driver.
> > -  The DV flow steering is not supported on switchdev mode.
> >
> >    Disabled by default.
> >
> > +- ``dv_esw_en`` parameter [int]
> > +
> > +  A nonzero value enables E-Switch using Direct Rules.
> > +
> > +  Enabled by default if supported.
> > +
> >  - ``mr_ext_memseg_en`` parameter [int]
> >
> >    A nonzero value enables extending memseg when registering DMA
> > memory. If @@ -545,7 +534,7 @@ DPDK and must be installed separately:
> >  - **libmlx5**
> >
> >    Low-level user space driver library for Mellanox
> > -  ConnectX-4/ConnectX-5/ConnectX-6/Bluefield devices, it is automatically
> > loaded
> > +  ConnectX-4/ConnectX-5/ConnectX-6/BlueField devices, it is
> > + automatically loaded
> >    by libibverbs.
> >
> >    This library basically implements send/receive calls to the hardware @@ -
> > 567,7 +556,7 @@ DPDK and must be installed separately:
> >    their devices:
> >
> >    - mlx5_core: hardware driver managing Mellanox
> > -    ConnectX-4/ConnectX-5/ConnectX-6/Bluefield devices and related
> > Ethernet kernel
> > +    ConnectX-4/ConnectX-5/ConnectX-6/BlueField devices and related
> > + Ethernet kernel
> >      network devices.
> >    - mlx5_ib: InifiniBand device driver.
> >    - ib_uverbs: user space driver for Verbs (entry point for libibverbs).
> > @@ -575,7 +564,7 @@ DPDK and must be installed separately:
> >  - **Firmware update**
> >
> >    Mellanox OFED/EN releases include firmware updates for
> > -  ConnectX-4/ConnectX-5/ConnectX-6/Bluefield adapters.
> > +  ConnectX-4/ConnectX-5/ConnectX-6/BlueField adapters.
> >
> >    Because each release provides new features, these updates must be
> > applied to
> >    match the kernel modules and libraries they come with.
> > @@ -595,7 +584,7 @@ releases.
> >  RDMA Core with Linux Kernel
> >  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >
> > -- Minimal kernel version : v4.14 or the most recent 4.14-rc (see `Linux
> > installation documentation`_)
> > +- Minimal kernel version : v4.14 or the most recent 5.1.0-rc (see
> > +`Linux installation documentation`_)
> >  - Minimal rdma-core version: v15+ commit 0c5f5765213a ("Merge pull
> > request #227 from yishaih/tm")
> >    (see `RDMA Core installation documentation`_)
> >  - When building for i686 use:
> > @@ -622,7 +611,8 @@ thanks to these environment variables:
> >  Mellanox OFED/EN
> >  ^^^^^^^^^^^^^^^^
> >
> > -- Mellanox OFED version: **4.4, 4.5** / Mellanox EN version: **4.5**
> > +- Mellanox OFED version: ** 4.5, 4.6** /
> > +  Mellanox EN version: **4.5, 4.6**
> >  - firmware version:
> >
> >    - ConnectX-4: **12.21.1000** and above.
> > @@ -630,7 +620,7 @@ Mellanox OFED/EN
> >    - ConnectX-5: **16.21.1000** and above.
> >    - ConnectX-5 Ex: **16.21.1000** and above.
> >    - ConnectX-6: **20.99.5374** and above.
> > -  - Bluefield: **18.99.3950** and above.
> > +  - BlueField: **18.25.1010** and above.
> >
> >  While these libraries and kernel modules are available on OpenFabrics
> > Alliance's `website
> > <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww
> > w.openfabrics.org%2F&data=02%7C01%7Cshahafs%40mellanox.com%7
> >
> C6432343b75294926c94c08d6d71918dc%7Ca652971c7d2e4d9ba6a4d149256f4
> >
> 61b%7C0%7C0%7C636932900128053421&sdata=d8coRBxwMI62n%2FB1I
> > E4mOcoVHs4lsiDl7kSgVljJBeY%3D&reserved=0>`__ and provided by
> > package @@ -766,6 +756,34 @@ Quick Start Guide on OFED/EN  6. Compile
> > DPDK and you are ready to go. See instructions on
> >     :ref:`Development Kit Build System <Development_Kit_Build_System>`
> >
> > +Enable E-Switch mode
> > +--------------------
> 
> It is how to enable switchdev mode right? Not e-switch mode.
> Need to put a few words on what it is switchdev mode and why it is needed.
> 

O.K will add some words.

> > +
> > +1. Enable SRIOV mode:
> > +
> > +  .. code-block:: console
> > +
> > +        mlxconfig -d <mst device> set SRIOV_EN=true
> > +
> > +2. Configure the number of VFs:
> 
> This is the max number of VFs.
>

Will fix.
 
> > +
> > +  .. code-block:: console
> > +
> > +        mlxconfig -d <mst device> set NUM_OF_VFS=<num of vfs>
> > +        echo <num of vfs > /sys/class/net/<net
> > + device>/device/sriov_numvfs
> 
> Need to reset FW after it.
> 
I don't think reset FW is required.

> Also - where do you create the actual VFs?
> 

The  in the second line:
 echo <num of vfs > /sys/class/net/<netdevice>/device/sriov_numvfs

> > +
> > +3. Unbind the device (can be rebind after the switchdev mode):
> > +
> > +  .. code-block:: console
> > +
> > +        echo -n "<device pci address" >
> > + /sys/bus/pci/drivers/mlx5_core/unbind
> > +
> > +4. Enbale switchdev mode:
> > +
> > +  .. code-block:: console
> > +
> > +        echo switchdev > /sys/class/net/<net
> > + device>/compat/devlink/mode
> > +
> >  Performance tuning
> >  ------------------
> >
> > @@ -842,6 +860,38 @@ Performance tuning
> >     - Configure per-lcore cache when creating Mempools for packet buffer.
> >     - Refrain from dynamically allocating/freeing memory in run-time.
> >
> > +Supported hardware offloads using rte_flow API
> > +----------------------------------------------
> > +
> > +.. _Supported hardware offloads using rte_flow API:
> > +
> > +.. table:: Supported hardware offloads using rte_flow API
> > +
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | Offload       | E-Switch  | NIC PF      | VF representor  | PF representor |
> > +   |               | (SRIOV)   | (non SRIOV) | (SRIOV)         | (SRIOV)        |
> > +
> > +===============+===========+=============+===============
> > ==+================+
> > +   | Encapsulation |     V     |     V       |        V        |       V*       |
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | Multi table   |     V     |     V       |        V        |       V*       |
> > +   | support       |           |             |                 |                |
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | NAT           |     V     |     V       |        V        |       V*       |
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | Routing       |     V     |     V       |        V        |       V*       |
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | TTL inc/dec   |     V     |     V       |        V        |       V*       |
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | Count         |     V     |     V       |        V        |       V*       |
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | Drop          |     V     |     V       |        V        |       V*       |
> > +   +---------------+-----------+-------------+-----------------+----------------+
> > +   | Mark          |    N/A    |     V       |        V        |       V*       |
> > +
> > + +---------------+-----------+-------------+-----------------+---------
> > + -------+
> > +
> > +| V ConnectX-5
> > +| V* ConnectX-5 & BlueField
> > +
> 
> What is the difference between E-Switch (SRIOV), VF representor (SRIOV) and
> PF representor (SRIOV)? On switchdev mode every rule is either for the
> VF/uplink representor.
> 
> The matrix is a bit more complex than what you show here.
> IMO-  the matrix has 2 column (E-Switch and NIC) and 2/3 dimensions (minimal
> NIC that support, minimal DPDK that support, minimal OFED/upstream kernel
> which support(?)).
> The columns need to be RTE_FLOW actions (let's leave the RTE_FLOW items
> aside for a moment). Because NAT, for example, may require different actions
> on different implementations.
> 

PSB my answer above.

> 
> >  Notes for testpmd
> >  -----------------
> >
> > @@ -863,7 +913,7 @@ Usage example
> >  -------------
> >
> >  This section demonstrates how to launch **testpmd** with Mellanox -
> > ConnectX-4/ConnectX-5/ConnectX-6/Bluefield devices managed by
> > librte_pmd_mlx5.
> > +ConnectX-4/ConnectX-5/ConnectX-6/BlueField devices managed by
> > librte_pmd_mlx5.
> >
> >  #. Load the kernel modules:
> >
> > diff --git a/doc/guides/rel_notes/release_19_05.rst
> > b/doc/guides/rel_notes/release_19_05.rst
> > index 4e0eed5..489273b 100644
> > --- a/doc/guides/rel_notes/release_19_05.rst
> > +++ b/doc/guides/rel_notes/release_19_05.rst
> > @@ -148,10 +148,16 @@ New Features
> >     * Added support for multiport InfiniBand device.
> >     * Added control of excessive memory pinning by kernel.
> >     * Added support of DMA memory registration by secondary process.
> > -   * Added Direct Rule support in Direct Verbs flow driver.
> >     * Added support of per-process device registers, reserving identical VA
> > space
> >       is not needed anymore.
> > -   * Added E-Switch support in Direct Verbs flow driver.
> > +   * Added Direct Rule support for Nic steering, in Direct Verbs driver.
> > +   * Added Direct Rule support for E-Switch steering, in Direct Verbs driver.
> 
> People who read the release notes doesn't necessarily read the entire mlx5
> manual. It is not clear what Direct rule is and why it is good.
> I would drop this part.
> 
>

This was done by Olga request.
But I don't care to remove it.
 
> > +   * Added support for jump action for both E-Switch and Nic when using
> > +     Direct Rules.
> 
> How can user know if it uses Direct rule or not? I would just stick with:
> "Support rte_flow jump action"
> 

O.K 

> > +   * Added Group Support for Nic steering when using Direct Rules.
> 
> Again:
> "Support multiple rte_flow groups"
> 
> > +   * Support millions of offloaded flow rules.
> > +   * Improved flow insertion rate to millions of flows per second when using
> > +     Direct Rules and group larger then 0.
> 
> I would say:
> * flow engine re-design to support large scale deployments. This include:
> 1. support millions of rte_flow rules
> 2. fast flow insertion and deletion up to 1M flow update per second.
> 
>

O.K.

 
> >
> >  * **Renamed avf to iavf.**
> >
> > --
> > 1.8.3.1



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